Differences in the Microstructures and Tensile Properties of Each Zone of Inertia Friction Welded Joints of TA19 Titanium Alloy

TA19 titanium alloy is a novel medium-temperature, high-strength widely used in the aerospace industry, and its welding performance very important for manufacturing of structural parts. In this study, was connected by inertial friction (IFW). After welding, microstructural alloying elements IFW joints were investigated; results showed that microstructures each zone joint different, accumulations β-stable element Mo only observed base metal (BM) heat-affected (HAZ). Tensile tests performed using specially designed specimens with circular grooves to obtain axial mechanical properties different zones joints. The stress–strain curves tensile fractures analyzed; strength welded increased, but plasticity decreased from BM WZ.